Vintage go kart with a snowmobile engine

I had a gokart at 12yrs old. I delivered newspapers with it until I burned up the 2 stroke. A neighbor asked me what happened to the gokart, told him motor quit. He gave me a large 18hp motor from a brick lift. It was fast as hell, smoked the tires for 50ft. Then my younger brother crashed into a guardrail and broke his leg. No more gokart, parents got rid of it.